I'm a native of San Francisco, a lifelong resident. But I'm also a millennial raised with both a conservative concern for the long term and an optimism for the

I'm a native of San Francisco, a lifelong resident. But I'm also a millennial raised with both a conservative concern for the long term and an optimism for the future via science. And the big story is that the suburbs are unsustainable in every way. Preserving neighborhood character feels nice, but life is change. Preventing old houses from being torn down does not prevent old residents from leaving. You want preservation, then you better be prepared to pay for it. But the middle class suburbs, all those miles of pipes and miles of roads and miles of wires, are fundamentally insolvent. Even before you consider Proposition 13. http://www.strongtowns.org/journal/2011/10/10/suburban-salvage.html http://www.strongtowns.org/journal/2011/10/10/suburban-salva... Silicon Valley is not built out. Silicon Valley needs to be torn down and replaced.